There's nothing worse than finding your bike's battery has gone flat. When it's time for the inevitable replacement, don't go for a Wal-Mart special. BikeMaster's TruGel battery features a tough outer case constructed with anti-vibration technology, and its unique high-density oxide plate design increases the surface area for the most possible cranking power. The TruGel's safety valves prevent dangerous pressure build up by releasing any excess gas automatically. It comes with a two-year warranty for solid piece of mind.